There shall be no primary election for municipal offices. Nominations for the office of Mayor or Council member shall be made by petition only, on the standard forms provided by the Montgomery County Board of Elections for the nomination of nonpartisan candidates for such offices. Petitions must be filed with election authorities at least ninety (90) days before the day of election. Candidates for Mayor shall file petitions containing no less than 50 signatures of qualified electors of the Municipality. Candidates for Council shall file petitions containing no less than 25 signatures of qualified electors of the Municipality. The procedure established by the Ohio Election Laws for filing and voting shall be followed, except as modified by this Charter. An elector may sign only as many petitions for Mayor or Council member as there are places to be filled at the regular Municipal election.